Help. My baby is a lazy eater.?

She is 9 weeks old. fed, and gaining well. But recently she has been getting bad about "hanging out" at the nipple, sucking without swallowing, and eating only a little and then falling asleep. o she only gets a little milk at a time. This creates problems because she should be going 2 or 3 hours between meals and she is wanting to eat every hour, sometimes even more often. It's becoming stressful. One friend suggested making her basically cry it out and wait AT least 2 hours, but then there are other ppl who disagree with this tactic. I try to kinda pester her or shake her (by lightly rubbing her back) to keep her awake and eating, and even squeezing my to keep her swallowing, but you can't force a baby to eat more than they want to really. We are also pumping and trying to introduce the bottle now because I thought she was getting nipple shy because my letdown was so heavy. Anybody have any suggestions?